Biomaterial Database

Studies of platelet-bound and serum platelet-bindable immunoglobulins in dogs with idiopathic thrombocytopenic purpura. 1996

D C Lewis, and K M Meyers

Department of Veterinary and Comparative Anatomy, Pharmacology and Physiology, College of Veterinary Medicine, Washington State University, Pullman, USA.

Canine idiopathic thrombocytopenic purpura (ITP) is clinically analogous to chronic ITP in human beings. The objective of this study was to investigate the pathogenesis of canine ITP by determining whether immunoglobulins bound to the surface of platelets from dogs with ITP (platelet-bound immunoglobulins) were directed against host platelet antigen and whether platelet glycoproteins (GP) IIb and IIIa were target antigens in dogs with ITP. Thirty-two dogs with ITP were studied. Increased platelet-bound immunoglobulin concentrations were detected in 30 cases (94%), and increased concentrations of serum platelet-bindable immunoglobulins were detected in 11 cases (34%). Immunoglobulins eluted from the surface of platelets from dogs with ITP bound to homologous normal canine platelets in 11 of 19 cases (58%). Immunoglobulins against platelet membrane GP IIb and/or IIIa were detected in serum from four of 17 affected dogs. This study provides evidence that immunoglobulins bound to surface of platelets from some dogs with ITP are directed against host platelet antigens and that platelet target antigens are, in some cases, GP IIb and IIIa. This supports the hypothesis that canine ITP is an autoimmune disease, similar to the pathogenesis of chronic ITP in human beings.

UI	MeSH Term	Description	Entries
D010084	Oxidation-Reduction	A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).	Redox,Oxidation Reduction
D010976	Platelet Count	The number of PLATELETS per unit volume in a sample of venous BLOOD.	Blood Platelet Count,Blood Platelet Number,Platelet Number,Blood Platelet Counts,Blood Platelet Numbers,Count, Blood Platelet,Count, Platelet,Counts, Blood Platelet,Counts, Platelet,Number, Blood Platelet,Number, Platelet,Numbers, Blood Platelet,Numbers, Platelet,Platelet Count, Blood,Platelet Counts,Platelet Counts, Blood,Platelet Number, Blood,Platelet Numbers,Platelet Numbers, Blood
D010980	Platelet Membrane Glycoproteins	Surface glycoproteins on platelets which have a key role in hemostasis and thrombosis such as platelet adhesion and aggregation. Many of these are receptors.	PM-GP,Platelet Glycoprotein,Platelet Membrane Glycoprotein,PM-GPs,Platelet Glycoproteins,Glycoprotein, Platelet,Glycoprotein, Platelet Membrane,Glycoproteins, Platelet,Glycoproteins, Platelet Membrane,Membrane Glycoprotein, Platelet,Membrane Glycoproteins, Platelet,PM GP
D001792	Blood Platelets	Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation.	Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D004283	Dog Diseases	Diseases of the domestic dog (Canis familiaris). This term does not include diseases of wild dogs, WOLVES; FOXES; and other Canidae for which the heading CARNIVORA is used.	Canine Diseases,Canine Disease,Disease, Canine,Disease, Dog,Diseases, Canine,Diseases, Dog,Dog Disease
D004285	Dogs	The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)	Canis familiaris,Dog
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001323	Autoantibodies	Antibodies that react with self-antigens (AUTOANTIGENS) of the organism that produced them.	Autoantibody
D001324	Autoantigens	Endogenous tissue constituents with the ability to interact with AUTOANTIBODIES and cause an immune response.	Autoantigen,Autologous Antigen,Autologous Antigens,Self-Antigen,Self-Antigens,Antigen, Autologous,Antigens, Autologous,Self Antigen,Self Antigens
D016553	Purpura, Thrombocytopenic, Idiopathic	Thrombocytopenia occurring in the absence of toxic exposure or a disease associated with decreased platelets. It is mediated by immune mechanisms, in most cases IMMUNOGLOBULIN G autoantibodies which attach to platelets and subsequently undergo destruction by macrophages. The disease is seen in acute (affecting children) and chronic (adult) forms.	Autoimmune Thrombocytopenic Purpura,Idiopathic Thrombocytopenic Purpura,Purpura, Thrombocytopenic, Autoimmune,Werlhof's Disease,Autoimmune Thrombocytopenia,Immune Thrombocytopenia,Immune Thrombocytopenic Purpura,Thrombocytopenic Purpura, Autoimmune,Werlhof Disease,Autoimmune Thrombocytopenias,Autoimmune Thrombocytopenic Purpuras,Disease, Werlhof,Disease, Werlhof's,Idiopathic Thrombocytopenic Purpuras,Immune Thrombocytopenias,Immune Thrombocytopenic Purpuras,Purpura, Autoimmune Thrombocytopenic,Purpura, Idiopathic Thrombocytopenic,Purpura, Immune Thrombocytopenic,Purpuras, Autoimmune Thrombocytopenic,Purpuras, Idiopathic Thrombocytopenic,Purpuras, Immune Thrombocytopenic,Thrombocytopenia, Autoimmune,Thrombocytopenia, Immune,Thrombocytopenias, Autoimmune,Thrombocytopenias, Immune,Thrombocytopenic Purpura, Idiopathic,Thrombocytopenic Purpura, Immune,Thrombocytopenic Purpuras, Idiopathic,Thrombocytopenic Purpuras, Immune,Werlhofs Disease